1354 BULLETIN DE L'HERBIER BOISSIER (2Me SÉR.). 
xanthopus 852. — Polystomella Mrconiæ 81. — Polytrichum sexangulare 135. 
— Pontederia cordala 95, 97, 422: rotundifolia 422. — Populus alba 542; 
euphratica 1197; mutabilis 1197; nigra 542; pyramidalis 542; tremulus 542, 
1190. — Porophyllum ruderale 417. — Porphyridium cruentum 1011 ; Schinzi 
1012. — Portulaca oleracea 4, 225, 375. — Potamogeton alpinus 194: erispus 
195; densus 195; lucens 194; natans 19%. — Potentilla Adscharica 952; æstiva 
713; alba 1235; alba X fragariastrum 636: Alberti 65%, 655; anserina 712; are- 
naria 952; argentea 951: argentea X canescens 951; Astrachanica 951; aurea 
712, 1246, 1249, 1261, 1262, 1265, 1272; bifurca 268, 951; caulescens 530, 711, 
1246, 1249, 1262, 126%, 1270: divina 951; erecta 712, 952; fallacina 952; Gold- 
bachi 952; Gremlii 71%: heptaphylla 636 : iniermedia 71%; intermedia var. canes- 
cens 71%: longifolia 713: micrantha 951: monticola 713; obscura 951 ; opaca 713; 
opaca var. serotina 713: Oweriniana 951; pedata 268; polyodonta 1295; reptans 
712, 952; reptans X erecla 714: reptans var. subpedata 952; rubens 1236; 
rupestris 701, 1295; sterilis 711; subpalmata 951; subpedata 952: superargentea 
951; Taurica 951; verna 531; verna var. asiatica 952; villosa 713. 952. 1246, 
1249, 1262, 126%, 127%; villosa var. firma 713. — Poterium sanguisorba 953. 
Pothos Chapelieri 556. — Pourouma aspera 299. — Pouzolzia guineensis 50. 
— Prangos Goktchaica 963: Szovitzii 963. — Preissia commulata 622; quadrata 
618. — Premna divaricata 581; integrifolia 581; quadrifolia 834; serralifolia 
581. — Prenanthes purpurea 1070. — Prescottia micrantha 424. — Primula 
acaulis 334, 1292, 1293; auricula 824, 913, 1190, 1246, 1251, 1265, 1270, 1272, 
1273; elator 914; elator X officinalis 65%; farınosa 913, 1237, 1247; marginata 
532; media 654, 657: officinalis 91%; oflicinalis var. Columnæ 116; veris 914. 
— Procris pedunculala 558. — Probium heptaphyllum 103. — Prunus Arme- 
niaca 729; avium 728, 729, 945: cerasus 728: divaricata 945; domestica 729; 
insitilia 729; Mahaleb 116; padus 729; prostrata 945; prostrata var. concolor 945; 
spinosa 728, 1145, 119%. — Pseudarthria Hookeri 16. — Pseudoconnarus 
fecundus 891 ; macrophyllus 891. — Pseudogaltonia Pechuleii 85%; subspicata 
853. — Pseudoleskea alrovirens var. lenella 135. — Pseudospondias micro- 
carpa 10. — Psidium Guajava 752. — Psilotum triquetrum 1015. — Psopho- 
carpus longepedunculatus 17. — Psoralea bituminosa 390. — Psorospermum 
chionanthifolium 571; citrifolium 571; febrifugum 4; Humbloti 571. — Psy- 
chotria æneofusca 327 ; Ansel:ii 31; Barraensis 327; cuspidata 327 ; d’scolor 327; 
subeuspidata 327. — Pteridium æquilinum 1190; aquilinum 187, 1016. — 
Pterıdomonas pulex 1311. — Pteris aquilina 63: asperula 451, 1016; atro- 
virens 6%; concolor 429; cretica 1016, 1286; Currori 64, 553; incisa 64, 1044; 
laurea 553; lomariacea A429; longifolia 451; Moluccana 451: obscura 451; 
Papuana 451; pedata 429; quadriaurita 451, 553, 849, 1016; semipinnala var. 
dispar 1016; tripartita var. magna 1016; triplicata 553. — Pterocarpus erina- 
ceus 750. — Pteraucolon polystachyon 415. — Pterocephalus plumosus 972. 
— Pterolepis cearensis 318: glomerala 318; Trianæi 318; trichotoma 105. — 
Pteromonas aculeala 1310. — Ptilidium ciliare 595, 618, 619, 630; ciliare 
